When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
At around $400 for the set they better be good. I would like to know this too.
OEM units are $92ea/$736 per set. The MSD units are less expensive. I'm just asking about them to see if there is a performence improvement with them over the OEMs. Everything else I've bought from MSD has been top-notch in quality so no worries there.